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Expression of Recombinant Cellulase Cel5A from Trichoderma reesei in Tobacco Plants

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Wheat straw, a potential substrate for cellulase production usingTrichoderma reesei.

D K Maheswari¹, H Jahan, J Paul

¹PG Studies and Research in Microbiology, Department of Botany, Gurukul Kangri University, Hardwar, India.

World Journal of Microbiology & Biotechnology

|January 15, 2014

Summary

Pre-treating wheat straw with alkali or steam significantly improves its use by Trichoderma reesei. This enhances the production of key enzymes like carboxymethyl cellulase and filter paper cellulase.

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Area of Science:

Biotechnology
Agricultural Science
Enzyme Technology

Background:

Wheat straw is a lignocellulosic biomass abundant in agricultural waste.
Efficient utilization of wheat straw is crucial for biofuel and biochemical production.
Pre-treatment methods are necessary to break down lignocellulose for enhanced enzymatic hydrolysis.

Purpose of the Study:

To evaluate the efficiency of Trichoderma reesei in utilizing pre-treated wheat straw.
To assess the impact of alkali and steam pre-treatment on enzyme production.

Main Methods:

Wheat straw was pre-treated using alkali, steam, or a combination of both.
The pre-treated and untreated wheat straw were used as substrates for Trichoderma reesei cultivation.
Enzyme activities, specifically carboxymethyl cellulase and filter paper cellulase, were measured.

Main Results:

Trichoderma reesei utilized pre-treated wheat straw 46% more efficiently than untreated straw.
Carboxymethyl cellulase activity increased by 52% in treated substrates.
Filter paper cellulase activity showed a significant increase of 74% in treated substrates.

Conclusions:

Alkali and/or steam pre-treatment significantly enhances the digestibility of wheat straw by Trichoderma reesei.
Pre-treatment boosts the production of essential cellulase enzymes, indicating improved biomass conversion potential.
These findings support the use of pre-treated wheat straw as a viable substrate for industrial biotechnology applications.